1 // This file was extracted from the TCG Published 2 // Trusted Platform Module Library 3 // Part 3: Commands 4 // Family "2.0" 5 // Level 00 Revision 01.16 6 // October 30, 2014 7 8 #include "InternalRoutines.h" 9 #include "NV_Read_fp.h" 10 #include "NV_spt_fp.h" 11 // 12 // 13 // Error Returns Meaning 14 // 15 // TPM_RC_NV_AUTHORIZATION the authorization was valid but the authorizing entity (authHandle) is 16 // not allowed to read from the Index referenced by nvIndex 17 // TPM_RC_NV_LOCKED the Index referenced by nvIndex is read locked 18 // TPM_RC_NV_RANGE read range defined by size and offset is outside the range of the 19 // Index referenced by nvIndex 20 // TPM_RC_NV_UNINITIALIZED the Index referenced by nvIndex has not been initialized (written) 21 // 22 TPM_RC 23 TPM2_NV_Read( 24 NV_Read_In *in, // IN: input parameter list 25 NV_Read_Out *out // OUT: output parameter list 26 ) 27 { 28 NV_INDEX nvIndex; 29 TPM_RC result; 30 31 // Input Validation 32 33 // Get NV index info 34 NvGetIndexInfo(in->nvIndex, &nvIndex); 35 36 // Common read access checks. NvReadAccessChecks() returns 37 // TPM_RC_NV_AUTHORIZATION, TPM_RC_NV_LOCKED, or TPM_RC_NV_UNINITIALIZED 38 // error may be returned at this point 39 result = NvReadAccessChecks(in->authHandle, in->nvIndex); 40 if(result != TPM_RC_SUCCESS) 41 return result; 42 43 // Too much data 44 if((in->size + in->offset) > nvIndex.publicArea.dataSize) 45 return TPM_RC_NV_RANGE; 46 47 // Command Output 48 49 // Set the return size 50 out->data.t.size = in->size; 51 // Perform the read 52 NvGetIndexData(in->nvIndex, &nvIndex, in->offset, in->size, out->data.t.buffer); 53 54 return TPM_RC_SUCCESS; 55 } 56
